On Saturday 07 June 2014 10:15:35 Kenneth Lerman did opine And Gene did reply: > On 6/6/14, 3:18 AM, Chris Morley wrote: > >>> Take this Scenario:- > >>> Max Velocity 2000mm > >>> Feed in program 1000mm > >>> Turn the max velocity slider down to 75% = Rapids now 1500mm , Feed > >>> 1000mm Turn the max velocity slider down to 50% = Rapids now > >>> 1000mm , Feed 1000mm Turn the max velocity slider down to 25% = > >>> Rapids now 500mm , Feed 500mm This is getting awfully confusing > >>> now because what is the feedrate slider doing at this point if you > >>> set it to 50%??????????????? Do you get 50% of 1000mm or 500mm. > >>> I have never seen such bollocks in 30 years of cnc machine > >>> operating. > > > > I might point out that max velocity is not in percent. > > It is an absolute setting of units per minute (mm per minute in your > > case) That does explain why it works strangely to you. > > And yes I'm aware that possibly no commercial control works this way. > > IIRC it was an easy way to implement overriding of rapids at the > > time. > > > > Rapid override would be a great addition - I have a patch on the dev > > list just not sure it is the best way to go yet. > > > > When upgrading major versions (eg 2.5 to 2.6) one should expect big > > changes. We try to outline them in the wiki. > > One should be extra careful when upgrading major versions because of > > these type of changes and also because they are inherently less > > tested. That's the perils of upgrading > > (which you don't need to do unless there are new feature you > > need/want) > > (I'm writing this to the developers list.) > > Rather then tell us how to make changes so that the system works the > way it used to, I'd rather see that as a default. Even if it adds a > small amount of complexity to the system I think it would be better if > the release notes said something to the effect: > 1 -- To enable the new override functionality, add the line > SPLIT_OVERRIDE=1 to your .ini file > 2 -- To enable the new pid functionality, add the line NEW_PID=1 to > your .ini file. > > I think that would be safer and anyone who knows about the feature can > easily enable it. (Maybe we should add a new section to the .ini > files.) > > Or maybe consider adding DEFAULT_FEATURE_SET=2.5 (for all old stuff), > DEFAULT_FEATURE_SET=2.6 for the next version, DEFAULT_FEATURE_SET=3.0, > etc. > > Regards, > > Ken
This would seem to make perfect sense to me, Kenneth. How hard it might be to code I don't know. > > > If your keen on more input to the development of linuxcnc, might I > > suggest you subscribe to the dev list. > > > > Cheers > > Chris M > > > > --------------------------------------------------------------------- > > --------- Learn Graph Databases - Download FREE O'Reilly Book > > "Graph Databases" is the definitive new guide to graph databases and > > their applications. Written by three acclaimed leaders in the field, > > this first edition is now available. Download your free book today! > > http://p.sf.net/sfu/NeoTech > > _______________________________________________ > > Emc-users mailing list > > emc-us...@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ----------------------------------------------------------------------- > ------- Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and > their applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/NeoTech > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
